(Potentially) Frequently Asked Questions
- What is the purpose of this catalog ?
- Which fields should I trust ?
- Why didn't you take this article into account ?
- What about curved power laws or super-exponential cut offs ?
- How can I use TeGaSoCat in my program ?
- How can I convert coordinates in another system ?
- What does this abbreviation mean ?
- Why does this page look so ugly ?
What is the purpose of this catalog ?
This catalog is meant to provide parametrizations of known TeV gamma-ray fluxes. Links to other TeV sources catalogs with different purposes are proposed on the homepage.
Which fields should I trust ?
Some fields are given only as a rough guide. For instance, the significance may sometimes refer to the fitted sample significance, other times to the detection significance, before/after pre/post-trials factors, etc. The energy range may refer to the first and last bins mean values, or to the low and high energy bounds, or simply be extracted from the figures (in which case the parametrization won't have a trusted flag however). The integral flux may refer to the fit or to data.
The only flux-related fields that should be trust are the fluence, the spectral index, the exponential cutoff if any, and the chisquare. And for trusted labelled parametrizations only.
The position parameters are extracted from SIMBAD.
Why didn't you take this article into account ?
Only reports with enough informations to compute at least a rough estimate of the flux have been considered. Articles giving only a spectral index without flow information or only integral flux without spectral index didn't match the purpose of this catalog. Neither did sub-TeV parametrizations.
What about curved power laws or super-exponential cut offs ?
The author made the choice to keep the database not too complicated and considered only simple power laws and exponential cut offs. This choice may be questionable, however.
How can I use TeGaSoCat in my program ?
The listing pages use the GET HTTP request method, which means that the arguments can be given directly in the URL. For instance, to list fluxes with a spectral index within 2.1 and 2.3, you can use the searchfluxes.php script the following way : http://tegasocat.in2p3.fr/scripts/listfluxes.php?minindex=2.1&maxindex=2.3. You can thus use your favorite language to query what you want using its built-in web handling libraries. The available arguments are listed here. It is also strongly recommended, when querying from a script or program, to use the additionnal textmode=1 argument, which will get rid of the useless stuff and most of all format the output in a text-readable style, without misleading spaces.
How can I convert coordinates in another system ?
This website uses the galactic and ICRS coordinates systems, expressed in decimal representation. You can check here to convert coordinates in other systems online, .
What does this abbreviation mean ?
Below is the list of the abbreviations used in this website.
|A&A||Astronomy & Astrophysics|
|ApJL||Astrophysical Journal Letters|
|PRD||Physics Review D|
|PRL||Physics Review Letters|
|Source types :|
|AGN||Active Galactic Nucleus|
|BHC||Black Hole Candidate|
|PWN||Pulsar Wind Nebula|
|HXB||High mass X-ray Binary|
|FSRQ||Flat-Spectrum Radio Quasar|
|BLL||BL Lac object|
|LBL||Low frequency peaked BL Lac object|
|IBL||Intermediate frequency peaked BL Lac object|
|HBL||High frequency peaked BL Lac object|
Why does this page look so ugly ?
You are probably using Internet Explorer. I strongly suggest you to switch to a browser which better respects W3C standards, for instance Firefox (which has been used for tests), Opera, Safari, SeaMonkey, etc. Also note that some tables may be too large for some screen resolutions.